Then don't buy one. Take a chance on some school kid that bought a car when they got their first job before realizing what the insurance payments were, then neglected standard maintenance on it, or performed it in a substandard fashion, or hacked up the dash and trunk installing a super loud stereo.
Or I can continue buying new ones for under invoice and having the best of both worlds.
Persoanlly, IMO if you think you want a car that is only 1-2 years old with 0-20000 miles, you should just look at a new one. Even the 2013 GT's are selling for invoice minus incentives. If you can find a 2012 still they are dirt cheap. A used rental just doesn't do it for me, hell any used car just doesn't do it for me. Not in this new day and age of cheap new cars.